My boyfriend and I had sex about a month ago, last week I puked 3 times, I've been having lower back pains, a little bit of heartburn. urinating a lot, the ring around my boobs are getting darker and bigger, I have all the symptoms of pregnancy. I'm 14, I weigh 110, I'm 5'3, and I'm very healthy. I was just wondering, can pre-cum make me pregnant?